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514 lines
17 KiB
514 lines
17 KiB
/*
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* Minio Cloud Storage, (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package xl
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import (
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"bytes"
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"crypto/md5"
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"crypto/sha512"
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"encoding/base64"
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"encoding/hex"
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"encoding/xml"
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"io"
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"io/ioutil"
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"math/rand"
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"runtime/debug"
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"sort"
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"strconv"
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"strings"
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"time"
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"github.com/minio/minio/pkg/crypto/sha256"
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"github.com/minio/minio/pkg/probe"
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signV4 "github.com/minio/minio/pkg/signature"
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"github.com/minio/minio/pkg/xl/cache/data"
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)
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/// V2 API functions
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// NewMultipartUpload - initiate a new multipart session
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func (xl API) NewMultipartUpload(bucket, key, contentType string) (string, *probe.Error) {
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xl.lock.Lock()
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defer xl.lock.Unlock()
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if !IsValidBucket(bucket) {
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return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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if !IsValidObjectName(key) {
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return "", probe.NewError(ObjectNameInvalid{Object: key})
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}
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// if len(xl.config.NodeDiskMap) > 0 {
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// return xl.newMultipartUpload(bucket, key, contentType)
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// }
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if !xl.storedBuckets.Exists(bucket) {
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return "", probe.NewError(BucketNotFound{Bucket: bucket})
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}
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storedBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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objectKey := bucket + "/" + key
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if _, ok := storedBucket.objectMetadata[objectKey]; ok == true {
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return "", probe.NewError(ObjectExists{Object: key})
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}
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id := []byte(strconv.Itoa(rand.Int()) + bucket + key + time.Now().UTC().String())
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uploadIDSum := sha512.Sum512(id)
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uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])[:47]
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storedBucket.multiPartSession[key] = MultiPartSession{
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UploadID: uploadID,
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Initiated: time.Now().UTC(),
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TotalParts: 0,
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}
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storedBucket.partMetadata[key] = make(map[int]PartMetadata)
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multiPartCache := data.NewCache(0)
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multiPartCache.OnEvicted = xl.evictedPart
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xl.multiPartObjects[uploadID] = multiPartCache
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xl.storedBuckets.Set(bucket, storedBucket)
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return uploadID, nil
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}
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// AbortMultipartUpload - abort an incomplete multipart session
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func (xl API) AbortMultipartUpload(bucket, key, uploadID string) *probe.Error {
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xl.lock.Lock()
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defer xl.lock.Unlock()
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if !IsValidBucket(bucket) {
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return probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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if !IsValidObjectName(key) {
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return probe.NewError(ObjectNameInvalid{Object: key})
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}
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// TODO: multipart support for xl is broken, since we haven't finalized the format in which
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// it can be stored, disabling this for now until we get the underlying layout stable.
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//
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// if len(xl.config.NodeDiskMap) > 0 {
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// return xl.abortMultipartUpload(bucket, key, uploadID)
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// }
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if !xl.storedBuckets.Exists(bucket) {
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return probe.NewError(BucketNotFound{Bucket: bucket})
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}
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storedBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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if storedBucket.multiPartSession[key].UploadID != uploadID {
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return probe.NewError(InvalidUploadID{UploadID: uploadID})
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}
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xl.cleanupMultipartSession(bucket, key, uploadID)
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return nil
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}
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// CreateObjectPart - create a part in a multipart session
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func (xl API) CreateObjectPart(bucket, key, uploadID string, partID int, contentType, expectedMD5Sum string, size int64, data io.Reader, signature *signV4.Signature) (string, *probe.Error) {
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xl.lock.Lock()
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etag, err := xl.createObjectPart(bucket, key, uploadID, partID, "", expectedMD5Sum, size, data, signature)
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xl.lock.Unlock()
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// possible free
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debug.FreeOSMemory()
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return etag, err.Trace()
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}
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// createObject - internal wrapper function called by CreateObjectPart
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func (xl API) createObjectPart(bucket, key, uploadID string, partID int, contentType, expectedMD5Sum string, size int64, data io.Reader, signature *signV4.Signature) (string, *probe.Error) {
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if !IsValidBucket(bucket) {
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return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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if !IsValidObjectName(key) {
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return "", probe.NewError(ObjectNameInvalid{Object: key})
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}
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// TODO: multipart support for xl is broken, since we haven't finalized the format in which
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// it can be stored, disabling this for now until we get the underlying layout stable.
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//
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/*
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if len(xl.config.NodeDiskMap) > 0 {
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metadata := make(map[string]string)
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if contentType == "" {
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contentType = "application/octet-stream"
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}
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contentType = strings.TrimSpace(contentType)
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metadata["contentType"] = contentType
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if strings.TrimSpace(expectedMD5Sum) != "" {
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expectedMD5SumBytes, err := base64.StdEncoding.DecodeString(strings.TrimSpace(expectedMD5Sum))
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if err != nil {
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// pro-actively close the connection
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return "", probe.NewError(InvalidDigest{Md5: expectedMD5Sum})
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}
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expectedMD5Sum = hex.EncodeToString(expectedMD5SumBytes)
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}
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partMetadata, err := xl.putObjectPart(bucket, key, expectedMD5Sum, uploadID, partID, data, size, metadata, signature)
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if err != nil {
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return "", err.Trace()
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}
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return partMetadata.ETag, nil
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}
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*/
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if !xl.storedBuckets.Exists(bucket) {
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return "", probe.NewError(BucketNotFound{Bucket: bucket})
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}
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strBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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// Verify upload id
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if strBucket.multiPartSession[key].UploadID != uploadID {
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return "", probe.NewError(InvalidUploadID{UploadID: uploadID})
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}
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// get object key
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parts := strBucket.partMetadata[key]
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if _, ok := parts[partID]; ok {
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return parts[partID].ETag, nil
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}
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if contentType == "" {
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contentType = "application/octet-stream"
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}
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contentType = strings.TrimSpace(contentType)
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if strings.TrimSpace(expectedMD5Sum) != "" {
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expectedMD5SumBytes, err := base64.StdEncoding.DecodeString(strings.TrimSpace(expectedMD5Sum))
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if err != nil {
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// pro-actively close the connection
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return "", probe.NewError(InvalidDigest{Md5: expectedMD5Sum})
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}
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expectedMD5Sum = hex.EncodeToString(expectedMD5SumBytes)
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}
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// calculate md5
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hash := md5.New()
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sha256hash := sha256.New()
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var totalLength int64
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var err error
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for err == nil {
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var length int
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byteBuffer := make([]byte, 1024*1024)
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length, err = data.Read(byteBuffer) // do not read error return error here, we will handle this error later
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if length != 0 {
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hash.Write(byteBuffer[0:length])
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sha256hash.Write(byteBuffer[0:length])
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ok := xl.multiPartObjects[uploadID].Append(partID, byteBuffer[0:length])
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if !ok {
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return "", probe.NewError(InternalError{})
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}
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totalLength += int64(length)
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go debug.FreeOSMemory()
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}
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}
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if totalLength != size {
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xl.multiPartObjects[uploadID].Delete(partID)
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return "", probe.NewError(IncompleteBody{Bucket: bucket, Object: key})
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}
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if err != io.EOF {
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return "", probe.NewError(err)
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}
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md5SumBytes := hash.Sum(nil)
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md5Sum := hex.EncodeToString(md5SumBytes)
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// Verify if the written object is equal to what is expected, only if it is requested as such
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if strings.TrimSpace(expectedMD5Sum) != "" {
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if err := isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), md5Sum); err != nil {
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return "", err.Trace()
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}
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}
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if signature != nil {
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{
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ok, err := signature.DoesSignatureMatch(hex.EncodeToString(sha256hash.Sum(nil)))
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if err != nil {
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return "", err.Trace()
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}
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if !ok {
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return "", probe.NewError(signV4.SigDoesNotMatch{})
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}
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}
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}
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newPart := PartMetadata{
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PartNumber: partID,
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LastModified: time.Now().UTC(),
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ETag: md5Sum,
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Size: totalLength,
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}
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parts[partID] = newPart
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strBucket.partMetadata[key] = parts
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multiPartSession := strBucket.multiPartSession[key]
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multiPartSession.TotalParts++
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strBucket.multiPartSession[key] = multiPartSession
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xl.storedBuckets.Set(bucket, strBucket)
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return md5Sum, nil
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}
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// cleanupMultipartSession invoked during an abort or complete multipart session to cleanup session from memory
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func (xl API) cleanupMultipartSession(bucket, key, uploadID string) {
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storedBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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for i := 1; i <= storedBucket.multiPartSession[key].TotalParts; i++ {
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xl.multiPartObjects[uploadID].Delete(i)
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}
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delete(storedBucket.multiPartSession, key)
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delete(storedBucket.partMetadata, key)
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xl.storedBuckets.Set(bucket, storedBucket)
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}
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func (xl API) mergeMultipart(parts *CompleteMultipartUpload, uploadID string, fullObjectWriter *io.PipeWriter) {
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for _, part := range parts.Part {
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recvMD5 := part.ETag
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object, ok := xl.multiPartObjects[uploadID].Get(part.PartNumber)
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if ok == false {
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fullObjectWriter.CloseWithError(probe.WrapError(probe.NewError(InvalidPart{})))
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return
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}
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calcMD5Bytes := md5.Sum(object)
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// complete multi part request header md5sum per part is hex encoded
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recvMD5Bytes, err := hex.DecodeString(strings.Trim(recvMD5, "\""))
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if err != nil {
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fullObjectWriter.CloseWithError(probe.WrapError(probe.NewError(InvalidDigest{Md5: recvMD5})))
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return
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}
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if !bytes.Equal(recvMD5Bytes, calcMD5Bytes[:]) {
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fullObjectWriter.CloseWithError(probe.WrapError(probe.NewError(BadDigest{})))
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return
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}
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if _, err := io.Copy(fullObjectWriter, bytes.NewReader(object)); err != nil {
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fullObjectWriter.CloseWithError(probe.WrapError(probe.NewError(err)))
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return
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}
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object = nil
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}
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fullObjectWriter.Close()
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return
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}
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// CompleteMultipartUpload - complete a multipart upload and persist the data
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func (xl API) CompleteMultipartUpload(bucket, key, uploadID string, data io.Reader, signature *signV4.Signature) (ObjectMetadata, *probe.Error) {
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xl.lock.Lock()
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defer xl.lock.Unlock()
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size := int64(xl.multiPartObjects[uploadID].Stats().Bytes)
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fullObjectReader, err := xl.completeMultipartUploadV2(bucket, key, uploadID, data, signature)
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if err != nil {
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return ObjectMetadata{}, err.Trace()
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}
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objectMetadata, err := xl.createObject(bucket, key, "", "", size, fullObjectReader, nil)
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if err != nil {
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// No need to call internal cleanup functions here, caller should call AbortMultipartUpload()
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// which would in-turn cleanup properly in accordance with S3 Spec
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return ObjectMetadata{}, err.Trace()
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}
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xl.cleanupMultipartSession(bucket, key, uploadID)
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return objectMetadata, nil
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}
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func (xl API) completeMultipartUploadV2(bucket, key, uploadID string, data io.Reader, signature *signV4.Signature) (io.Reader, *probe.Error) {
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if !IsValidBucket(bucket) {
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return nil, probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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if !IsValidObjectName(key) {
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return nil, probe.NewError(ObjectNameInvalid{Object: key})
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}
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// TODO: multipart support for xl is broken, since we haven't finalized the format in which
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// it can be stored, disabling this for now until we get the underlying layout stable.
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//
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// if len(xl.config.NodeDiskMap) > 0 {
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// xl.lock.Unlock()
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// return xl.completeMultipartUpload(bucket, key, uploadID, data, signature)
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// }
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if !xl.storedBuckets.Exists(bucket) {
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return nil, probe.NewError(BucketNotFound{Bucket: bucket})
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}
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storedBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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// Verify upload id
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if storedBucket.multiPartSession[key].UploadID != uploadID {
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return nil, probe.NewError(InvalidUploadID{UploadID: uploadID})
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}
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partBytes, err := ioutil.ReadAll(data)
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if err != nil {
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return nil, probe.NewError(err)
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}
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if signature != nil {
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partHashBytes := sha256.Sum256(partBytes)
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ok, err := signature.DoesSignatureMatch(hex.EncodeToString(partHashBytes[:]))
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if err != nil {
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return nil, err.Trace()
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}
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if !ok {
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return nil, probe.NewError(signV4.SigDoesNotMatch{})
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}
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}
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parts := &CompleteMultipartUpload{}
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if err := xml.Unmarshal(partBytes, parts); err != nil {
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return nil, probe.NewError(MalformedXML{})
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}
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if !sort.IsSorted(completedParts(parts.Part)) {
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return nil, probe.NewError(InvalidPartOrder{})
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}
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fullObjectReader, fullObjectWriter := io.Pipe()
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go xl.mergeMultipart(parts, uploadID, fullObjectWriter)
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return fullObjectReader, nil
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}
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// byKey is a sortable interface for UploadMetadata slice
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type byKey []*UploadMetadata
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func (a byKey) Len() int { return len(a) }
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func (a byKey) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a byKey) Less(i, j int) bool { return a[i].Key < a[j].Key }
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// ListMultipartUploads - list incomplete multipart sessions for a given bucket
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func (xl API) ListMultipartUploads(bucket string, resources BucketMultipartResourcesMetadata) (BucketMultipartResourcesMetadata, *probe.Error) {
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// TODO handle delimiter, low priority
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xl.lock.Lock()
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defer xl.lock.Unlock()
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if !IsValidBucket(bucket) {
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return BucketMultipartResourcesMetadata{}, probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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// TODO: multipart support for xl is broken, since we haven't finalized the format in which
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// it can be stored, disabling this for now until we get the underlying layout stable.
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//
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// if len(xl.config.NodeDiskMap) > 0 {
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// return xl.listMultipartUploads(bucket, resources)
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// }
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if !xl.storedBuckets.Exists(bucket) {
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return BucketMultipartResourcesMetadata{}, probe.NewError(BucketNotFound{Bucket: bucket})
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}
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storedBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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var uploads []*UploadMetadata
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for key, session := range storedBucket.multiPartSession {
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if strings.HasPrefix(key, resources.Prefix) {
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if len(uploads) > resources.MaxUploads {
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sort.Sort(byKey(uploads))
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resources.Upload = uploads
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resources.NextKeyMarker = key
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resources.NextUploadIDMarker = session.UploadID
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resources.IsTruncated = true
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return resources, nil
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}
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// uploadIDMarker is ignored if KeyMarker is empty
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switch {
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case resources.KeyMarker != "" && resources.UploadIDMarker == "":
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if key > resources.KeyMarker {
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upload := new(UploadMetadata)
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upload.Key = key
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upload.UploadID = session.UploadID
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upload.Initiated = session.Initiated
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uploads = append(uploads, upload)
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}
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case resources.KeyMarker != "" && resources.UploadIDMarker != "":
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if session.UploadID > resources.UploadIDMarker {
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if key >= resources.KeyMarker {
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upload := new(UploadMetadata)
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upload.Key = key
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upload.UploadID = session.UploadID
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upload.Initiated = session.Initiated
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uploads = append(uploads, upload)
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}
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}
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default:
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upload := new(UploadMetadata)
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upload.Key = key
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upload.UploadID = session.UploadID
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upload.Initiated = session.Initiated
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uploads = append(uploads, upload)
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}
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}
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}
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sort.Sort(byKey(uploads))
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resources.Upload = uploads
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return resources, nil
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}
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// partNumber is a sortable interface for Part slice
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type partNumber []*PartMetadata
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func (a partNumber) Len() int { return len(a) }
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func (a partNumber) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a partNumber) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
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// ListObjectParts - list parts from incomplete multipart session for a given object
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func (xl API) ListObjectParts(bucket, key string, resources ObjectResourcesMetadata) (ObjectResourcesMetadata, *probe.Error) {
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// Verify upload id
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xl.lock.Lock()
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defer xl.lock.Unlock()
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if !IsValidBucket(bucket) {
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return ObjectResourcesMetadata{}, probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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if !IsValidObjectName(key) {
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return ObjectResourcesMetadata{}, probe.NewError(ObjectNameInvalid{Object: key})
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}
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// TODO: multipart support for xl is broken, since we haven't finalized the format in which
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// it can be stored, disabling this for now until we get the underlying layout stable.
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//
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// if len(xl.config.NodeDiskMap) > 0 {
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// return xl.listObjectParts(bucket, key, resources)
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// }
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if !xl.storedBuckets.Exists(bucket) {
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return ObjectResourcesMetadata{}, probe.NewError(BucketNotFound{Bucket: bucket})
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}
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storedBucket := xl.storedBuckets.Get(bucket).(storedBucket)
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if _, ok := storedBucket.multiPartSession[key]; ok == false {
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return ObjectResourcesMetadata{}, probe.NewError(ObjectNotFound{Object: key})
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}
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if storedBucket.multiPartSession[key].UploadID != resources.UploadID {
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return ObjectResourcesMetadata{}, probe.NewError(InvalidUploadID{UploadID: resources.UploadID})
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}
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storedParts := storedBucket.partMetadata[key]
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objectResourcesMetadata := resources
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objectResourcesMetadata.Bucket = bucket
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objectResourcesMetadata.Key = key
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|
var parts []*PartMetadata
|
|
var startPartNumber int
|
|
switch {
|
|
case objectResourcesMetadata.PartNumberMarker == 0:
|
|
startPartNumber = 1
|
|
default:
|
|
startPartNumber = objectResourcesMetadata.PartNumberMarker
|
|
}
|
|
for i := startPartNumber; i <= storedBucket.multiPartSession[key].TotalParts; i++ {
|
|
if len(parts) > objectResourcesMetadata.MaxParts {
|
|
sort.Sort(partNumber(parts))
|
|
objectResourcesMetadata.IsTruncated = true
|
|
objectResourcesMetadata.Part = parts
|
|
objectResourcesMetadata.NextPartNumberMarker = i
|
|
return objectResourcesMetadata, nil
|
|
}
|
|
part, ok := storedParts[i]
|
|
if !ok {
|
|
return ObjectResourcesMetadata{}, probe.NewError(InvalidPart{})
|
|
}
|
|
parts = append(parts, &part)
|
|
}
|
|
sort.Sort(partNumber(parts))
|
|
objectResourcesMetadata.Part = parts
|
|
return objectResourcesMetadata, nil
|
|
}
|
|
|
|
// evictedPart - call back function called by caching module during individual cache evictions
|
|
func (xl API) evictedPart(a ...interface{}) {
|
|
// loop through all buckets
|
|
buckets := xl.storedBuckets.GetAll()
|
|
for bucketName, bucket := range buckets {
|
|
b := bucket.(storedBucket)
|
|
xl.storedBuckets.Set(bucketName, b)
|
|
}
|
|
debug.FreeOSMemory()
|
|
}
|
|
|